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Northwestern University Apr 19, 2012 Electrical Engineering and Computer Science Handout #6 EECS357: Introduction to VLSI CAD Due: Apr 26 Prof. Hai Zhou

Homework 3

You may discuss the assignments with your classmates but need to write down your solutions independently. Be careful with your handwriting. Unclear solutions will be assumed to be wrong.

1. (20 points) Exercise 3.10 on page 155.

2. (20 points) Exercise 3.17 on page 157.

3. (20 points) Exercise 4.3 on page 221.

4. (20 points) Exercise 4.9 on page 223.

5. (20 points) Prove that the sum of the cutsizes over all r − 1 horizontal and s − 1 vertical cutlines across an r× s gate-array master is the same as the total wire length according to the half-perimeter estimate.

6. (20+30 points Due in two weeks on 5/3) Programming assignment: implement an algorithm for linear placement, that is, to place the cells in one row. The input is a netlist that gives the number of cells and the connection between the cells. Assume each cell has a unit width, thus can be placed on the integer positions. You may select your approach from similated annealing, partitioning based, iterative construction, or any other approaches. We will select as the champion a program that gives the minimal wire length for a set of inputs, and give it a bonus credit of 30 points. To make the competition easy, please use the following format for input:

number of cells number of nets cell1 cell2 cell3 cell4 /* a net connecting 4 cells */ cell1 cell2 /* another net */ ...

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